# Cross-Shard Queries

> The degree of difficulty and cost of a query that must gather data from multiple shards.

Record: `lex:cross-shard-queries`
Kind: quality-attribute
Layer: [Performance Core](https://banes-lab.com/records/layer/performance-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-cross-shard-queries

## category

- [Scalability / Performance / Optimization](https://banes-lab.com/records/lex-category/scalability-performance-optimization.md)

## referenced-by

- [Sharding](https://banes-lab.com/records/arch/sharding.md)